Abstract
The single‐edge V‐notched‐beam fracture testing method was used to measure the short‐crack R‐curve behavior of a 90‐vol%‐alumina–10‐vol%‐ceria‐doped zirconia multilayered composite. The initiation and extension of short cracks from the V‐notch tip were observed in situ via optical microscopy. Initial crack lengths of 15–50 μm were obtained repeatedly. The resulting R‐curve was similar to the R‐curve that was measured using the surface‐crack‐in‐flexure testing method. The ability to control the position of the V‐notch tip within a material permits study of the influence of specific microscopic features on the fracture behavior.
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